A joint of graphite and titanium alloy and its preparation method
A technology of titanium alloy and graphite, which is applied in the field of graphite and titanium alloy joints and its preparation, can solve the problems of difficult graphite connection and uneven texture of the connection interface, and achieve low raw material cost, easy implementation, uniform and dense connection layer Effect
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Embodiment 1
[0019] The present embodiment provides a joint of graphite and titanium alloy, including a three-layer connection layer composed of Cu foil, Ti foil and Cu foil to connect graphite block and titanium alloy block (the specific distribution diagram can refer to figure 1 ), wherein the purity of Ti foil and Cu foil is 99%, and the thickness of Ti foil and Cu foil is 50 μm, and its specific production steps are as follows:
[0020] Step 1. Grinding the end faces of the graphite block and the titanium alloy block to be connected, first polishing the Ti foil and the Cu foil with sandpaper to remove oxides on the surface of the foil, and then grinding the polished graphite block and titanium alloy block Ti Put the foil and Cu foil into alcohol and ultrasonically clean them for 15 minutes, then dry them for use;
[0021] Step 2. Put Cu foil, Ti foil and Cu foil in sequence between the graphite block and the titanium alloy block, and apply a pressure of 10kPa to clamp the graphite bloc...
Embodiment 2
[0025] Same as Example 1, the difference is that the thickness of Ti foil in the joint of graphite and titanium alloy in this example is 30 μm, the thickness of Cu foil is 60 μm, and the furnace temperature in the vacuum furnace in the manufacturing steps is 980° C., and the heat preservation 10min, then cool down to room temperature with the furnace, take out the sample to get the graphite and titanium alloy joint.
[0026] The joints of graphite and titanium alloy prepared in this example were tested for shear strength on an electronic universal testing machine. The shear strength of the joint was 18MPa, reaching 112.5% of the shear strength of the graphite block base material itself.
[0027] image 3 For this example, the XRD pattern of the joint joint interface area of graphite and titanium alloy obtained by using a connecting layer composed of Cu foil, Ti foil and Cu foil. It can be seen from the map that the interface region is mainly TiCu, Ti 2 Composition of Cu,...
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Abstract
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